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Nov. 29, 1932. H. HEETKAMP TUBE DRAWING BENCH Filed April 25. 1930 Inventor fil /MW .lttorrwy I Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE HEINRICH HEETHAMP, F DUISBURG, GERMANY, ASSIGNOB TO DEIAG AKTIENGE- SELLSGHAIT, OF'DUISBURG, GERMANY TUBE DRAWING BENCH Application 11011111111 25, 1980, Serial No. 447,300, and in Germany February 20, 1930.

It has been customary to control tube drawing benches from a platform, the supervisor 1 control platform, it lies in the direction of the draw ring bed. "With the distance indicator in this position it can be seen by the supervisor who at the same time watches the movements in the draw ring bed. This consider- .15 ably facilitates supervision. The distance indicator is advantageously formed of a verjtically disposed scale along which moves a pointer which is for example fitted with a moving nut. The invention is" diagrammatically illustrated by way of example in the accompanyin drawing.

iigure 1 1s a plan of the bench, and Figure 2 is a corresponding end elevation. The part of the bench w i operating rack 9 and the shaft 10 of the mandrel is denoted by 1 and the adjoining draw ring bed by 2. The rack 9 is driven from the gearing 7 by means of a pinion 12 and the so mandrel shaft 10 is guided in a tubular guide 13 carried in a series of spaced bearing memhere 14. The control platform is indicated in Figure 2 by full lines and in Figure 1 by dot and dash lines and is..denoted by 3. The distance indicator 4 is provided beside the draw ring bed, the screw-threaded spindle 11 which is employed being driven by the shaft 5 dis-'- posed beside the bed 1. The pointer is denoted by 6 and is carried by a nut on the spindle 11, which nut is constrained against rotation. The shaft 5 is driven by the gearing 7 through the bevelled wheels 8. The particular construction of thedistance indicator is of no importance to the invention. It is also possible to provide movable marks on the 1 scaled to show the supervisor clearly parch guides the order to make it easier to follow the movements of the mandrel.

I claim: 1. A tube draw benchprovided with a plurality of draw rings,a mandrel, means for propelling the mandrel through the draw rings,'an elongated tubular guide through which said mandrel is guided, a mandrel position indicator disposed adjacent the draw bench, an index movable in relation to said indicator, and a. mechanism driven from the mandrel moving mechanism for operating the said index relatively to the indicator. 2. A tube draw benchprovided with a plurality of draw rings, a mandrel, means for propelling the mandrel through the draw rings, an elongated tubular guide through which said mandrel is guided, a control platform adjacent the draw bench, a mandrel position indicator disposed adjacent the draw bench bed when viewed from the control platform, a movable index upon said indicator, a rotatable shaft lying adjacent the draw bench, a rotatable spindle for operating the said index, bevel gears driven from the said shaft for rotating the said spindle, and bevel gears connecting the said shaft with the mechanism for movin themandrel.

HEINRICH I HEETKAMP.

ticular positions of the mandrel during-the working of the bench. It is also advantage- 60 ous to provide the pointer 6 with a light in 

